Whilst the main welding head is of the submerged-arc type, the auxiliary welding heads 3 effect shielded-arc welding with consumable wire electrodes (MIG- or MAG-welding).

• 虽然主要焊接头的埋弧焊类型，辅助焊接头3效应屏蔽弧焊接消耗品线电极（米格或美焊接） 。